//////////////////////////////////////////////////////////////////////////
//Copyright (c) 2011, linlin liu
//All rights reserved.
//
//Redistribution and use in source and binary forms, with or without
//modification, are permitted provided that the following conditions are met:
//* Redistributions of source code must retain the above copyright
//notice, this list of conditions and the following disclaimer.
//* Redistributions in binary form must reproduce the above copyright
//notice, this list of conditions and the following disclaimer in the
//documentation and/or other materials provided with the distribution.
//* Neither the name of the <organization> nor the
//names of its contributors may be used to endorse or promote products
//derived from this software without specific prior written permission.
//
//THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
//ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
//WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
//DISCLAIMED. IN NO EVENT SHALL <COPYRIGHT HOLDER> BE LIABLE FOR ANY
//DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
//(INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
//LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
//ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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//////////////////////////////////////////////////////////////////////////

#include "amf0/amf0_string.h"
#include "amf0/amf0_integer.h"
#include <boost/cstdint.hpp>

amf::amf_string::amf_string()
{

}

amf::amf_string::amf_string(const std::string& val)
: m_val(val)
{
}

amf::amf_string::amf_string(const char* data)
: m_val(data)
{
}

bool amf::amf_string::operator< (const amf::amf_string& other) const
{
    return m_val.compare(other.get_value()) < 0;
}

amf::AMF_TYPE amf::amf_string::get_type() const
{
    return AMF_TYPE_STRING;
}

void amf::amf_string::encode(char* const data) const
{
    char *buf = data;

    amf_integer::encode<2>(buf, m_val.size());
    buf += 2;

    memcpy(buf, m_val.c_str(), m_val.size());
    buf += m_val.size();
}

boost::int32_t amf::amf_string::decode(const char *data, boost::uint32_t quota)
{
    if (quota < 2)
    {
        return AMF_DECODE_FAILED;
    }

    boost::uint32_t length = amf::amf_integer::decode<2>(data);

    if (quota < (length + 2))
    {
        return AMF_DECODE_FAILED;
    }

    if (length > 0)
    {
        m_val = std::string(data + 2, length);
    }

    return get_size();
}

const boost::uint32_t amf::amf_string::get_size() const
{
    return m_val.size() + 2;
}

const std::string& amf::amf_string::get_value() const
{
    return m_val;
}

const std::string amf::amf_string::to_string() const
{
    return m_val;
}